Application & Operating Conditions
AS/NZS 1802 Type 275 is a specialized 1.1/1.1 kV round reeling cable (16–50 mm²) engineered specifically for high-speed underground coal shuttle cars, battery haulers on reel mode, and mobile face haulage equipment subjected to rapid bidirectional drum spooling, back-tension snatch loads, and sheave guide reversals.
Anti-Corkscrewing Shuttle Car Spooling
Instead of loose individually screened cores that slip under drum tension, Type 275 locks three R-EP-90 EPR power cores inside an integral semiconductive elastomer cradle and fill reinforced by an open-weave textile braid.
Compact OD for Longer Reel Capacity
Eliminating individual metallic core braids reduces overall diameter (31.8 mm on 16 mm² to 43.3 mm on 50 mm²) and mass (170–370 kg/100m), maximizing cable length on constrained shuttle car reels.
Semiconductive Cradle Fault Sensing
The conductive elastomer matrix continuously surrounds all three power cores and contacts the three interstitial earth cores, providing earth-leakage fault detection alongside a central extensible pilot.
Need Individually Screened 1.1–11 kV Trailing Cables? Where mine regulations or voltage levels (≥3.3 kV) require individually screened phase cores, view AS/NZS 1802 Type 241 or composite-braided AS/NZS 1802 Type 209.
Cable Construction (AS/NZS 1802 Type 275)
Type 275 features a torsion-stabilized semiconductive cradle architecture specifically tailored to prevent core migration, hockling, and corkscrewing on dynamic shuttle car reels.
| Layer / Component | Material & AS/NZS 1802 Specification |
|---|---|
| 1. Conductors | Flexible finely stranded tinned annealed copper (3 phase cores + 3 interstitial earth cores + 1 central extensible pilot) |
| 2. Phase Insulation | R-EP-90 EPR thermosetting compound (1.6–1.7 mm radial wall; colour-coded Red, White, Blue, non-individually screened) |
| 3. Semiconductive Cradle & Fill | Semi-conductive elastomer cradle and overall core filling encapsulating all three phase cores for collective fault screening and torsional stability |
| 4. Earth & Central Pilot Cores | Three semiconductive-elastomer-covered earth cores (4.5, 6.6, 9.0, or 13.2 mm² each) in the outer interstices + one central extensible pilot |
| 5. Open-Weave Reinforcement | High-tenacity open-weave textile reinforcement braid bonded between the semiconductive core fill and outer sheath |
| 6. Heavy-Duty Outer Sheath | Black heavy-duty HD-85-PCP polychloroprene sheath (3.8–4.7 mm wall; custom visibility colours / CPE / CSP on request) |
Type 275 Cross-Section Geometry: Red, White, and Blue EPR power cores sit directly in the grey semiconductive elastomer cradle/fill (without separate core screens), flanked by 3 semiconductive earth cores and 1 central pilot.
Technical Characteristics
Rated 1.1/1.1 kV in compliance with AS/NZS 1802, Type 275 combines verified AC impedance, capacitance, and voltage-drop performance with high mechanical resilience under cyclic reeling.
| Parameter | AS/NZS 1802 Rated Value |
|---|---|
| Manufacturing Standard | AS/NZS 1802 (Electric cables — Reeling and trailing — For underground coal mining applications) |
| Cable Designation & Voltage | Type 275 — 1.1/1.1 kV |
| Standard Shuttle Car Sizes | 16 mm², 25 mm², 35 mm², 50 mm² |
| Interstitial Earth Area (Each) | 3 × 4.5 mm² (16 mm²) | 3 × 6.6 mm² (25 mm²) | 3 × 9.0 mm² (35 mm²) | 3 × 13.2 mm² (50 mm²) |
| Max. Continuous Conductor Temp. | +90 °C |
| Minimum Installation Temperature | −25 °C |
| Primary Reeling Service | High-speed underground coal shuttle cars and bidirectional reeling haulage vehicles |
| Outer Sheath & Flame Rating | Open-weave reinforced black HD-85-PCP (CPE / CSP / colours optional) | C1 flame performance |
Electrical & Dimensional Specifications (Type 275 — 1.1/1.1 kV)
Complete conductor diameter, AC resistance at 90 °C, 50 Hz reactance, three-phase voltage drop, capacitance, earth conductor sizing, overall diameter, and mass data for all 4 AS/NZS 1802 Type 275 shuttle car sizes.
Type 275 — Rated Voltage: 1.1/1.1 kV Shuttle Car Reeling Cable (16 mm² to 50 mm² | 4 Sizes)
| Area (mm²) | Cond. Dia. (mm) | Insul. (mm) | Max AC Res. @ 90°C (Ω/km) | Reactance @ 50Hz (Ω/km) | 3-Ph Volt Drop (mV/A·m) | Capacitance (μF/km) | Each Earth (mm²) | Sheath (mm) | Cable Dia. (mm) | Mass (kg/100m) |
|---|---|---|---|---|---|---|---|---|---|---|
| 3 × 16 | 6.0 | 1.6 | 1.58 | 0.109 | 2.74 | 0.377 | 4.5 | 3.8 | 31.8 | 170 |
| 3 × 25 | 7.3 | 1.6 | 0.951 | 0.102 | 1.66 | 0.443 | 6.6 | 4.0 | 35.0 | 225 |
| 3 × 35 | 8.9 | 1.6 | 0.698 | 0.0963 | 1.22 | 0.521 | 9.0 | 4.3 | 39.0 | 285 |
| 3 × 50 | 10.2 | 1.7 | 0.523 | 0.0943 | 0.920 | 0.551 | 13.2 | 4.7 | 43.3 | 370 |
Selection: Type 275 Shuttle Car Cable vs. Type 241 & Type 209
Shuttle car reeling imposes dynamic tensile snatch and sheaf-reversal torque that rapidly degrades conventional loose-core trailing cables.
| Cable Model | Screening Method, Torsional Resistance & Target Machine |
|---|---|
| Type 275 (This Product) | Non-individually screened EPR cores molded in semiconductive cradle/fill + open-weave braid (1.1 kV, 16–50 mm²). Purpose-built for high-speed shuttle car reeling drums to prevent corkscrewing and maximize reel capacity. |
| Type 241 / Type 241SF | Individually semiconductive-screened phase cores rated 1.1–11 kV up to 300 mm². Specify Type 241 or Type 241SF for continuous miners, bolters, monorails, or 3.3 kV+ machines. |
| Type 209 | Type 209 uses composite tinned-copper/polyester braids on each phase core (1.1–11 kV) for general trailing duty where metallic phase screens are preferred over dynamic high-speed drum reeling. |
Frequently Asked Questions (FAQ)
Technical answers on how Type 275 eliminates corkscrewing on shuttle car drums and achieves earth-fault protection without individual metallic core braids.
Why do shuttle cars use Type 275 instead of composite-braided Type 209?
Shuttle cars accelerate and reverse across rough roadways while paying cable in and out around level-wind sheaves under hydraulic back-tension. Metallic braid wires on Type 209 fatigue and fracture under constant cyclic reeling, whereas Type 275 bonds its EPR cores inside a resilient semiconductive elastomer cradle reinforced by an open-weave anti-torsion braid to resist corkscrewing and strand breakage.
How does earth-leakage protection operate when the phase cores are not individually screened?
All three R-EP-90 EPR power cores are completely surrounded by the extruded semiconductive elastomer cradle and core filling, which remains in intimate electrical contact with the three semiconductive-covered interstitial earth conductors (totaling 13.5 mm² to 39.6 mm² of tinned copper earth area). Any phase insulation penetration immediately conducts into the earth-leakage trip circuit.
Can TEBAOFLEX supply Type 275 cut to exact shuttle car reel lengths with colored sheaths?
Yes. We supply custom shuttle car reel cut lengths (e.g., 150 m, 200 m, 250 m) in standard black HD-85-PCP or high-visibility coloured / CPE / CSP outer sheaths to match mine fleet identification standards.
Request a Quote for AS/NZS 1802 Type 275 Shuttle Car Reeling Cables
Send us your shuttle car conductor size (16, 25, 35, or 50 mm²), reel length, and sheath preference for fast factory engineering support and export pricing.
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